Improvement in water - feeders for steam-boilers



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UNITED STATES PATENT OFFICE PAUL `NARCISSE JOSEPH MACABIES, OF PARIS, FRANCE.

IMPROVEMENT IN WATER FEEDERS FOR STEAM BOILERS.

Specification forming part of Letters Patent No. 171, 149, dated December 14, 1875; application ijled April 20, 1875.

To all whom it may concern:

Beit known that I,PAUL NARCISSE J osEPE MACAB'IES, of Paris, in the Republic of France, have invented a new Improvement in Water- Meter and Feeder for Boilers; and I do hereby declare the following, when taken in connection with the accompanying drawings, and

Vthe lettersof reference marked thereon, to be a full, clear, and exact description ofthe same, and which vsaid drawings constitute part of this specification, and represent, in

Figure l, vertical central section; Fig. 2, vertical section through the `steam-cylinder, transverse to that shown in Fig. l; Fig. 3, the same section as that shownin Fig. l 5 Fig. 4, the same as `Fig. 3, with the valve on the exhaust; Fig. 5, a horizontal section through .r of Fig. 3, these four sections being enlarged.

Thisinvention relates to aldevice for automatically feeding steam-boilers, and which may at the same time measulrlejthnelohume of water supplied 5 and the /igventionconsists in the arrangement of a/gjoat within a receiver, which is-"alternately filledwwith water Aand steam, coliibinedyiw agalye arrangement for the iiiIt and outlet of water, and Witha'inechanism actuated by the said'iloat, whereby the inflowing waterwraisesthe float to abertain" defined point, and then steam admitted to the said receiver toV force that quantity of Water contained in the receiver into the boiler, all as more fully hereinafter described.:`

R is the water receiver or chamber, within which a float, F, is arranged, supported on a vertical rod, t, and so as to Work freely up and down on the said rod. A collar, e, is arranged at the top of the rod, and a similar collar, j', at the bottom, so that the float in its ascent, striking the collar e, will raise the rod, and, returning, will strike thecollar f and depress the rod. l

A pipe, I, leads the water from the reservoir through a valve, I', tothe receiver R, and the water flowing through the bottom of the receiver passes out through a valve, V, to the boiler, the pressure of the boiler tending to hold the valve V closed, excepting .when that pressure is counterbalanced or overcome, and the valve I free to open toward the receiver until the pressure of the inowing Water is overcome, as hereinafter described.

Aactuated by a lever, IL, one end of which is hinged to the upper end of the rod t, and the other in a seat, b', in the valve; hence, as the float F rises so as to raise the rod, the valve G will be thrown down, as indicated in broken lines, Fig,3. Returning, the floatdraws'down the rod and raises the valve to the condition of Fig. 3. In these movements of the valve G steam is alternately admitted and exhausted from opposite ends of the cylinder, in the usual manner for steam-cylinders.

Within the steam-cylinder are two connected pistons, 'm m', attached to a slide-valve, D,

(see Figs. 2 and 4,) and so that as the steam is admitted through the upper part, the pistons, with the valve D, will be driven downward, as indicated in Fig. 2, and as the valve G is changed, the pistons and valve D will be driven upward, as seen in Fig. 4.

Steam is admitted through the passage a to the cylinder between the two pistons and around the valve D, the space between the pistons formin g practically the steam-chamber for the valve D. From thespace or steam-chamber between -the'two pistons there is a passage, r, whichleads into the receiver above the float-here represented as into the same space within which the lever L is hung, and as seen in Fig. 5. p

When the iioat rises to its extreme height it throws the valve G down. Then thepistons, with the valve D; will be forced downward, by means'of the steamadmitted through the port opened by the valve G, into the position as seen in Fig. 2, which leaves the passage r open in direct connection with the boiler through the passage a., and so that steam will flow di-V rectly from the boiler through the passage r into the receiver Vabove the iioat. Therefore, supposing the receiver to have been filled with water, flowing or forced in until the float has risen to move the valve G, as described, this intlowine` steam will produce a pressure upon the Water corresponding to the pressure in the boiler, thusproducing an equilibrium between the boiler and the receiver, and causing the Water to flow from the receiver through the valve V into the boiler, it being understood that the receiver is arranged above the waterlevel.

As the last of the water passes from the receiver the oat strikes the collar f and throws the valveG up to admit steam below the pistons, and allowthat above to escape. This raises the pistons and the valve D, as seeniir Fig. 4, cutting oft'. the passage r fromV the direct steam and opening it to the exhaust 0. so

that the steam in the receiver will escape, and water again flow in to raise the lioat, until Iit again changes the valve G, as before, and' so continuing as long as the direct steam is admitted to actuate thepistons 5 or if the receiver be arranged relatively to the boiler, so that the bottom of the receiver be on the waterline, then it will only operate as the water in the boiler falls below that line, and hence i will maintain the constant water-line.

The capacity of the receiverbeing known,

l and the number of times itis filled registered by any suitable automatic mechanism, the

The combination, in a .waterfeeder for steamboilers, of the receiver R, inlet-valve I', outlet-vaive V, the vertical rod t, provided with collars e f, the float F working freely up and down said rod, the steam-cylinder T, its valve G connected with the said rod t, a double piston, m m', and slide-valve D, actuated by said pistons, land the passage r from the space between the pistons to the receiver, and alternately opened and closed to admit steam to-and exhaust it from the said receiver, substantially as set forth.

In testimony whereof Ihave signed my name to this specification before two subscribing witnesses.

DAVID-T. S. FULLER, ALBERT CAREN. 

